I've been running my Scandal as a SS for just over a year now with a 32:16 ratio. I read in other threads about people having different ratios i.e. 34:16 and wondered what the benefits of these are?
Does it make any difference in having a bigger ring on either end to take it past the 2:1 mark and if so what?
Also while I think about it should the chain go under or over a chain tensioner (Gussett if that helps) and do I need one when running SS or will the wheel fall out without?
Curiosity and boredom brought on as man flu says I cant ride 🙁
Bit early for lunchtime?
[pantomode]Oh no it isnt[pantomodeoff]
Not quite sure I understand your question. 34-16 is a bit bigger (ie. harder) gear than 32-16. If you are really bored you can play around with http://sheldonbrown.com/gears/
A well qualified geek informed me a while back that certain front/rear ring combinations will help with chainring and chain longevity. Something about a link hitting different teeth on the chainring each revolution...or something. I think a 34:19 was good, 32:18 bad (in this context)
Ok I've found the pertinent bit of the conversation (required quite a hunt back in time on Facebook!)...
"The smaller the bend on a chain the more power it loses and the quicker it wears, also the odd divosor on the 34/19 means the chain will allways land on a different tooth each revoluton"
So in essence then a bigger ring on the front will make it harder to pedal in the same way a smaller one on the back will?
have you ever ridden a bike with a triple front chainset?
It will indeed.
prime numbers aid wear - something to do with the chain/ sprockets not meeting at the same place all the time.
also helps with fixie skid marks 😯
I like a big ring I do. I have a feeling using a bigger ring and smaller at the back gives more mechanical advantage, when I had a big ring I used to prefer to use that and a larger one at the back than an equivalent on the middle and smaller at the back, for some reason. A load of internet engineers will be along to poopoo that now, but I know what my legs like!
I've set up a 32:16 using the fixed superstar tensioner, or whats left of it after hacking a load of it off to fit my dropout, and I have it downwards as it wouldn't fit upwards with the 16t. I reckon with an 18t it would work upwards though, but I haven't had any chain slip in downwards yet.
Whilst we are on it, I have an on-one SS kit cog at the back, and it is well noisy with a 9 speed chain, as each tooth enters the chain it makes a loud tic noise, is this just the way it is supposed to be? Its quite annoying, chainline is fine so its not that.
Never thought about it, but yes having an even/odd chainring setup would be good for chain life.
34/17
38/19
etc
Has anyone considdered that 2:1 means that the same bit of tyre gets scrubbed every time you pedal? I.e. left foot pedals and wears one section, then the the wheel does one revolution before th right hand pedal pushed gainst it? Anyone checked their tyre for this?
[i]Anyone checked their tyre for this? [/i]
Sheldon did;
[url= http://www.sheldonbrown.com/fixed.html#skid ]http://www.sheldonbrown.com/fixed.html#skid[/url]
find 'skid patches' on that page
Has anyone considdered that 2:1 means that the same bit of tyre gets scrubbed every time you pedal?
You can surely only take that into account when riding fixed gear though.
Fair point, hadn't thought of that